Compact Linear Fresnel System for medium insolation and soft-land country 1 MW scaleable to 5, 10, 50, 100 MW

1. Compact Linear Fresnel Reflector
Power Plant 1 MW
for
Soft Land, Medium Insolation
and Humid Country
By
Solar Space Frame Industrial Co.,Ltd
Bangkok, Thailand
January 30, 2012

2. Intro
In CSP technology such as Trough, Compact Linear Fresnel Receiver,
Solar Tower, Solar Dish Stirling, etc required large area as shading effect. It
needs high insolation such as 1,000 W/m2 min. It is not suitable to operate
in humid and medium insolation such as 500 W/m2. As the structure so long
it needs good foundation in Soft-land area. It uses high power for tracking
as the system has no sound weight balanced. CSP had high thermal losses
due to long receiver tubes, long deliver fluid tubes, high temperature
thermal storage, and high working temperature. It required very good
thermal insulation. Once the structure to long it cannot prevented from
twisting so the structure will be large and heavy.
The turbine required high pressure, temperature, and dry steam quality.
Also generator required synchronous system when connected to grid. It is
not Easy to transport and assembly. As high technology the operation and
maintenance costs will be high. The material is not easy to find as the
system use high temperature. We expect the cost of CSP should below 90
THB/W, 3.0 US$/W, or 2.1 EURO/W when compare to solar cell. The Solar
Thermal Dish Steam Turbine with Induction Motor Farm may solve these
problems and make it possible for commercial.

4. Develop and deploy solar energy technology to serve
our customers’ who need special design for medium
insolation, soft-land, and humid countries. For global
electricity and thermal energy needs in a dependable,
market-competitive and environmentally responsible
manner.
Our Mission

5.  Offer comprehensive and fully integrated CSP solutions
 Lowest cost and most land-efficient CSP technology
 Solar steam generators offer turnkey solar solutions, including
power block and balance of plant
 High-volume manufacturing and installation, scalable and
modular
 Support services in project development and EPC
 Life-cycle services for long-term operations and maintenance
 Easy to operate and maintenance
 Low operation and maintenance cost
 Operate from medium to high insolation
 Molten salt storage
 Direct Steam at saturation or superheat temperature
 Low tracking power
 Light weight structure but heavy duty
 Structure prepare for earthquake, and high wind
 High efficiency receiver
 Back up by biomass, biogas, LPG, CNG
 Could operate 24/7 min 300 days/year
 Provide breakthrough innovation to lower our customers’ cost of
energy
 Design for monsoon climate insolation 500 – 1,000 w/m2 and soft-
land country
Comprehensive Solar Solutions

7.  Compact Linear Fresnel Reflector (CLFR)
 Arrays of optically-shaped reflector mirrors
 Concentrate over 50 “suns” of energy
 Boiler tubes generate high pressure
saturated and/or superheated steam
CLFR Technology

8. Solar Steam Generator
Steam (Saturated or Superheated)
Standalone Solar & Solar Solar Steam Augmentation Industrial Processing
Hybrid Power Plants
Customers
• Utilities • Utilities • Enhanced oil recovery & refining
• IPPs • IPPs • Mining
• Chemical processing & refining
• Food processing
• Desalination, Absorption Chiller
Application and Markets

9.  Solar Steam Generators (SSGs) use Concentrated Solar Power
(CSP) to drive steam turbines or provide process steam
 Each SSG is 1200’ long, 60’ high, 120’ wide
 Each can produce up to 10,000 kg/hr (22,000 lbs/hr) of
saturated or superheated steam
 Solar boiler, ASME S-Stamp qualify.
 SSG will not overheat, even with coincident failure of offsite
power (feed water and reflector drive) and backup power
(reflector drive) at solar noon on the summer solstice
 Durable designs of standard materials can be erected rapidly
and deployed at scale
 IBC/UBC structural design for Seismic Zone 4 and 90 mph wind
Key Product Attributes

10. Solar Steam Performance @ 1 MW  Performance
Temperature Up to 750 F (180 C)  Constructability
Up to 900 F (200 C)  Reliability
Pressure Up to 150 PSIa (10 BARa)  Scalability
Up to 230 PSIa (16 BARa)  Operability
Annual Energy per 1,500 MWh
8 Rais (12,800 Sq.m)
Engineered for Customer Needs

11.  ASME “S” Stamp Solar boiler standard
 ASME Boiler & Pressure Vessel Code
 Section I, 2007 Edition, 2008a Addenda
 ASME B31.1 Power Piping Code
 2007 Edition, 2008a Addenda
 Structural Codes
 Uniform building code
 International building code
 Authorized inspector
Standard Code Designed

12.  Most land-efficient solar technology,
lowest cost CSP technology
 Lower land and grading costs and
ongoing O&M costs, less time-intensive
permitting
 Easier access to contiguous, flat land, can
be built on sloping sites (<3% grade)
 Reduced environmental impact (no oil
containments), lower view shed impact
 Easy to erection, operation and
maintenance, less time-intensive
permitting
 Scalable by adding solar steam
generators, greater ability to site at
existing power plants and industrial sites
Solar Cell 16 Rais
CSP Reference Plant Thin Film 24 Rais
1 MW = 12,000 Sqm = 8 Rai Solar Trough 12 Rais
= 1.3 Hectares CLFR 8 Rais
Solar Tower 16 Rais
CLFR Advantages

13.  SSG is the building block
 Each SSG contains one receiver with boiler
tubes
 Receiver heated by reflector rows in
segments
 Segments comprised of factory assembled
reflectors and drives
 Modular System 250 kW, 1MW, 5MW, 10 MW
 Scalable 1MW, 5MW, 25 MW, 50 MW
Modular, Scalable deployment

14. Downward facing receiver cavity
supports boiler tubes
Height ~10 m 25 towers support
400 m long receiver
Install on <3% grade in both
13 Reflectors E-W and N-S directions
Width ~40 m
Field Assembly

15.  Rapid field erection
 Minimal grading required (3%
grade acceptable)
 Simple foundations
 Steel Truss Structural
 Receiver (boiler tube and housing)
assembled on ground, hoisted,
hydrostatically tested and stamped
 Assemble reflectors on beams and
connect drive
Fast Erection

16. Steam Test
Out of Focus
Aug 25/2011 Cloudy
Row No. 11.30
1 95 109 104
2 130 131 130
3 160 160 160
4 190 191 190
Row No. 13.30
1 135 135 140
2 151 150 155
3 165 165 163
4 173 175 172
Infocus
Oct 4, 2011 11:45-12:00 Cloudy
Row No. Zone1 Zone2 Zone3
1 150 180 190
2 170 210 210
3 210 270 300
4 290 350 380

17.  Boiler Trips rotate reflected light away
from receiver
 High exit pressure
 High exit temperature
 UPS back-up for reflector drive power
 Passive thermal protection protects
against concurrent loss of
 Feed water
 AC mains
 UPS backup
 Worst Case
 Summer Solstice Solar Noon
 Boiler is completely hot and dry
Safety

18.  Simple, reliable, robust
 Design for medium
insolation, soft-land, and
humid countries
 Saturated or Superheated
steam at pressure and
temperatures that
customers want
 High-volume manufacturing
and installation, scalable
and modular
 ASME Section I design
 Commitment to customers
world-wide
 Lowest cost, most land-
efficient CSP technology
Summary

19. Efficiency %
Reflector 90
Receiver 80
Thermal Storage 85
Turbine 30
Generator 85
Thermal to Electrical 15
Efficiency

20. • Delta Truss
• Software Analysis
- Linear First Order
- Linear Second Order
- Non-linear First Order
- Non-linear Second Order
- Dynamic Harmonic
- Dynamic Seismic
- Dynamic Modal
- Bucking
- Stiffness
- Own weight
- Shell Stress
- Torsion
- Thermal expansion
- Moment
• Antirust treatment
• Easy to transport and erection
STRUCTURE DESIGN

21. CLFR Diagram

22. Overall Effective Seasonal
Technology Owner USD/m2
efficiency cost variation
Photovoltaic 800 10 8000 1:2.5
Trough SEGSVI 250 14 1430 1:5
Trough EURO 206 12 1470 1:5
CLFR AUSRA 110 10 1100 1:5
Redressable Trough Xiao 50 20 250 1:2.5
Tower DPT1200 150 24 350 1:7
Dish Stirling SOLO 150 29.5 200 1:8
Dish Turbine 80 35 180 1:8
Comparison of Solar Thermal Technologies

23. Linear Receiver

24. Descriptions THB (Million)
Foundation 3.50
Steel Column 5.50
Reflector Mirror 25.00
Low Pressure Turbine 250 k x 4 22.00
1 MW XFUR with Controller 7.50
Solar Boiler (Receiver Cavity) 12.50
Solar Tracking 2.50
Thermal Storage + Backup Burner 15.00
Accessories 8.50
Sub Total 102.00
VAT 7.14
Total 109.14
Cost for 1 MW System

25. Space Frame Structure

26. Compact Linear Fresnel Reflector

27. Steam Output 400 PSI 450 C

28. Turbine Test

29. Induction Motor with
Screw Turbine 250 kW

30. Controller Panel